Calculating-machine.



C. V. WILGUS.

CALCULATING MACHINE.

APPLICATION mm act. 21. m3.

Patented Aug. 24, 1915.

5 SHEETSSHEET I.

C. V. WILGUS.

CALCULATING MACHINE.

APPLICATHJN FILED OCT-2|. m3.

1 1 50,9 1 6. Patented Aug. 24, 1915.

5 SHEETS-SHEET 2.

M E W C. V. WILGUS.

CALCULATING MACHINE.

APPLICAUON FILED M121. 1913.

1 1 50,9 1 6 Patented Aug. 24, 1915.

5 SHEETS-SHEET 3.

WITNESSES: [NYE/VT H .C. V. WILGUS.

CALCULATING MACHINE.

APPLICATION men 0CT.2I. 191s.

Patented Aug. 24, 1915.

5 SHEETS-SHEET 4.

C. V. WILGUS.

CALCULA'HNG MACHINE. APPLICATION 'mzn ocr. 21. 1913.

5 SHEETS SHET 5.

' nwmroa Patented Aug. 24, 1915.

UNITED STATES PATENT OFFICE.

CHARLES V. WILGUS, OF KINGSTON, PENNSYLVANIA, ASSIGNOB TO THE ADDEIB. MACHINE COMPANY, 01' WILKES-BARBIE, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

CALCULATING-MACHINE.

Specification of I .etters latent.

Application filed October 21, 1913. Serial No. 796,420.

To all whom it may concern:

Be it known that I, CHARLES V. WrLoUs, a citizen of the United States, residingat Kingston, Luzerne county, Pennsylvania, have invented new and useful Improvements in Calculating-Machines, of which the following is a specification.

This invention relates to improvements in calculating machines, and more especially gagement of the counters with the drive members during the return stroke. Near the end of the return stroke,the counters are disengaged from the drive means, and the detaining means is reestablished. Depression of a clearing key prior to the forward stroke of the drive members rocks a set lever which trips the detaining means to enable the counters to engage their drive members in their forward stroke, so that the counters are reversely turned until all occupy a zero position. The clearing key having been released. prior to the return stroke, means acting on the set lever are brought into operation at the outset of such return stroke to disengage the counters and drive members to leave the counters in their cleared position. This mechanism is well known in the art, and further description is unnecessary.

One object is to improve and simplify the transmission mechanism between the motor proper and the main shaft of the machine.

Another object is to provide an automatic and positively operating safety device to insure the release of the clearing set lever at the end of the forward stroke of the main drive shaft.

A still further object is to render the action of the machine more regular and uniform in repeat operations, and in so doing,

to reduce the noise and clatter which might otherwise occur.

Other objects and advantageswill be more fully set forth hereinafter and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 1s a s de view of the right hand side of the machine, illustrating the motor drive appl ed to :1 Wales calculating machine. Fig. 2 1s a sectional view, showing the clutch and clutch-controlling mechanism. Fig. 3 is a plan view, parts being removed, and in sect1on, show1ng the connection between the startmg key, the clutch release member and the positively operated releasing device for the clearing set ever. Fig. 4 is a left hand side view, to show the mechanism to effect the positive release of the clearing set lever, the parts being in idle position, and Fig. 5 is a similar view, illustrating the positions assumed by the parts during the forward stroke of the main drive shaft, with the clearing key depressed, just prior to its release.

This embodiment of the invention is shown, applied to the well-known Wales calculating machine, disclosed in patents to Wales, 797,032, August 15, 1905; McFarland, 842,232, January 29, 1907 and 874,107, December 17, 1907; McFarland and Wales, 880,157 and 880,158, February 25, 1908, and the U. S. application of Messrs. J. P. Hunter and Henry Kiintzler, filed December 28, 1909, Serial No. 469,529, to which reference may be had for a more complete understanding of this invention.

The base 1 (Fig. 1) of the machine supports side frames 2, 2, between which sets the accumulating mechanism 3 and the key board mechanism 3'. A main shaft 4, through well-known operating connections, effects the o eration of the accumulating mechanism. anual operation of the main drive shaft is effected by means of a handle a. ratchet wheel or drive member 10 fixed to the worm wheel 7 and inclosed by the hub 11 of a clutch carrier or driven member 12 fast on the crank shaft. Oppositely located clutch pawls 13 guided in apertures in the hub 11 engage the teeth of the ratchet 10 to connect the carrier with the ratchet. The pawls are pivoted to T-shaped or angular rockers 14 turning on posts 15 secured to the rotatable carrier. Springs 16 press the pawls into engagement with the ratchet.

A clutch-re easing finger or member 17 pivoted at 18 to the casing 9, is normally held by a spring 31 in the path of a stop 19 projecting from a pawl-retracting frame 20 Journaled on the hub 11 of the pawl carrier. Oppositely extending slotted arms 21 on the retracting frame embrace studs 22 on the outer arms or stems of the rockers 14. In operation, the retracting frame and car rier turn with the clutch until the stop 19 of the retracting frame strikes the clutchreleasing member 17 which arrests the retracting frame and effects the disengagement of the clutch.

Depressing a starting key or trip 23 mounted on the right hand side frame 2 (Fig. 1) compresses a spring 24 interposed between an abutment 25 on the key and an arm 26 fast on one end of a crcss shaft 27 journaled in the side frames 2, 2, to rock the arm and hence the cross shaft. A second arm 28 (Fig. 2) fast on the cross shaft intermediate its ends, depresses a link 29 connecting said arm 28 with a tail 30 projecting from the clutch-releasing member or detent 17, to rock or shift the clutch-releasing member to idle position, against the tension of spring 31, to release the pawl retracting frame 20, and permit springs 16 to ress the pawls into the notches between t e teeth of ratchet 10 to connect the motor and the crank shaft 8.

Upon the release of the starting key 23, the superior spring 24 restores the starting key to normal position and enables the inferior spring 31 to shift the clutch-releasing member into the path of the stop 19 in readiness to arrest the pawl-retracting frame and effect the disengagement of the clutch members, when the crank shaft has made one complete revolution.

The ratchet teeth press against the pawls when the clutch is active, and to facilitate the disengagement of the pawls, a cam 32 is formed on the periphery of the driven member 12, and a spring 35 holds a pressure fin er 33 pivoted at 34, against the cam.

%'hen the face or drop 36 of the cam comes opposite the pressure finger 33, the latter, owin to its spring 35, forces the driven mem er 12 and its pawls 13 forwardly, or imparts a lead thereto relatively to the ratchet, to relieve the teeth of the pawls from the pressure exerted by the ratchet, and thereby render easy their retraction by the frame 20. Immediately after such lead occurs, the stop 19 strikes and is arrested by the clutch-releasing detent 17. The carrier 12 is not at once arrested, but has a slight further rotation relatively to the frame 20. g

It will be remembered that the rocker studs 22 are held in the slotted arms 21 of the arrested retracting frame, so that the slight excess rotation of the carrier advances the fulcrums 15 of the rockers, which has the effect of turning the rockers on their fulcrums against the tensions of the springs 16 to withdraw the pawls 13 from the ratchet 10, as in Fig. 2, and thereby effect the disconnection of the motor 5 and crank shaft 8.

In the operation of the machine, the lead imparted by the pressure finger 33 to the driven member 12, the arrest of the stop 19 and the withdrawal of pawls 13 from engagement with the drive ratchet 10 occur in such rapid succession as to be almost simultaneous.

Depressing a special key 43 rocks well known mechanism fully set forth in patent to McFarland, 842,232 above referred to, and including set levers 44 fixed on a cross shaft 45, to effect the restoration of the accumulatin mechanism 3 to zero on the forward stro e of the main drive shaft 4. A latch 46 on a segment 47 fixed to the main drive shaft catches over a stud 48 on the zero-resetting or clearing mechanism to lock said mechanism in set osition. Touching the starting key 23 ena les the motor to rock the main drive shaft forwardly. As the segment rocks with the shaft, it withdraws the latch 46 from the stud 48 and interposes a rib 49 carried by the segment 47, above the stud, to maintain the clearing mechanism in its set position.

To prevent improper operations of the machine, either intentionally or otherwise, an interlock between the starting key 23 and the clearing mechanism is provided, so that simultaneous depression of both devices is impossible; the operation of the clearin mechanism being prevented while the main drive shaft is turning, and complete de ression of the clearing key insured befbre the starting key can be operated. This interlock comprises an arm 50 on the left hand end of the cross shaft 27, having a lug 51 thereon, (Fig. 3), and an extension of the left hand set lever 44 terminating in a stop 52 adjacent the In 51. Normally the parts are in the posltions shown in Fig. 4.

Attempted depres...-.1 of the starting key 23 and clearing key 43 together, depresses the set lever 44 to bring the face of stop 52 into the path of the lug 51 which rocks against it, to lock the starting key against complete depression until the clearing key has been fully depressed, whereupon the continued de ression of the starting key trips the clutc -releasing member 17 to free the clutch for action, but in so doing, rocks the arm 50 and its lug 51 over the stop or extension of lever 44. Thus the lock arm holds the lever 44 andthe clearing mechanism in set position as the main drive shaft Starts on its forward stroke.

In other operations, the locking arm rocks beneath the forward'end of lever'44 to prevent de ression of the clearing key as the main rive shaft starts on its forward stroke. Releasing the starting key 23, enables the sprin 31 to return the clutch-releasing detent 1 into the path of the stop 19 and in so doing, withdraws the locking arm 50 and its lug 51 to idle position by its operation of the cross-shaft 2 The foregoing construction is not novel in this specification and only constitutes part of the present invention in so far as it is combined with the novel features now to be set forth. v

A crank 37 (Fig. 1) on the crank shaft 8 normally lies in contact with the toe 38 of a rack bar 39 resting on and guided by roll studs 40, one of which may project through a slot in the rack bar. A rack 41 on said bar meshes with a toothed segment 42 on the main drive shaft 4 to rock the latter forwardly.

When the pawls 13 engage the ratchet 10, upon the withdrawal of the clutch release member 17, by depression of the starting key, the crank drives the rack to rock the main shaft. As the crank completes onehalf its revolution, it rides oil of or disengages itself from the toe of the rack bar, whereupon the main restoring spring 4 Fig. 3) returns the drive shaft to its home position, thereby rotating the toothed segment 42 in the opposite direction, to restore the rack bar so that its toe 38 lies adjacent the crank 37 when the latter has completed the remaining half revolution. It is at this point in single operations of the main drive shaft, that the clutch is released to disengage the motor and crank shaft. The clutch mechanism makes one complete revolution for every complete operation of the machine, and is not arrested at the completion of every half revolution.

In order to leave the counters at zero, in clearing operations, it is necessary to release the set lever 44 at the completion of such forward stroke, to enable the clearing mechanism to effect the disengagement of the counters and racks prior to the return of the latter. Therefore, to positively insure the release of the set levers44 by locking the arm 50, as the main drive shaft completes its forward stroke, especially if the starting key 23 is held depressed either unintentionally or otherwise when the clearing mechanism is set for o eration, I provide the locking arm 50' wi a cam 53 which, u on depression of the starting key, and t e rotation of the shaft 27, shifts into the path of a tappet 54 on the segment or arm 47. As the main drive shaft approaches the end of its forward stroke cam to rock the locking arm 50 to idle position.

The positive displacement of the lock arm 50 by the tappet 54 and cam 53, as the main drive shaft approaches the end of its forward stroke, enables the set lever 44 to return to normal position, and effects the disconnection of the racks and counters prior to the return of the former.

'- The cam 53 merges into a dwell portion 55 whichthe tappet 54 engages after pass ing oil the cam, to maintain the lock arm idle, while the forward stroke is being completed and during the beginning of the return stroke, so that the lock arm cannot return to locking position over the extension of set lever 44 while the latter is being released from the locking rib 49 on the seg ment 47.

Continued depression of the starting key 23 effects repeat operations of the machine. Such depression maintains the spring 24 under compression to disable the clutch-releasing member 17, though it is rocked into the path of the stop 19 by the contact of tappet 54 with the cam 53. The member 17 1s rocked into the path of the stop 19, further compressing spring 24, at about the time the crank 37 has completed one-half its revolution, after which spring 24 acts to retract the member 17 before the stop 19 arrives at its arresting point. Hence, the clutch connection between the motor 5 and the crank shaft 8 remains unbroken, to effect rapidly'successive repeat operations of the main drive shaft 4.

The use of a single stop 19 on the clutch retracting frame 20, and a sin le crank 37 on the crank shaft, causes t e crank to make one complete revolution to each operation of the main drive shaft, and affords the governor 4 time to settle or come to rest before beginning the next stroke, to render the action of the machine re lar and uniform, in repeat operations. his arthe tappet strikes the.

rangement maintains the regularity of the which mi ht otherwise occur in repeat operations o the machine.

Changes may be made in the form and arrangement of the several parts set forth, without departing from the spirit and scope of this invention. 7 7

What I claim as new, s:

1. In a calculatin machine, the combination with a main 've shaft, adapted to rock forwardly and backwardly; means to rock the drive shaft forwardly; a tri pin member to control the o ration o sai means; accumulating mec'anism; a clearing device for said mechanism; and means controlled by the tripping member to lock the clearing device in or out of eflective position; of means operated from the main drive shaft, to disable the lock prior to the backward stroke of the main drive shaft.

2. In a calculating machine, the combination with a main drive shaft, adapted to rock forwardly and backwardly; means to rock the drive shaft forwardly; a tripping member to control the operation of said means; accumulating mechanisma clearing device for said mechanism; an means controlled by the tripping member to lock the clearing device in or out of eifective position; of an arm on the main drive shaft to release the lock to free the clearing device.

3. In a calculatin machine, the combination with a main drive shaft, adapted to rock forwardly and backwardly; means to rock the drive shaft forwardly; a tr' pin member to control the operation of said means; accumulating mechanism; a clearing device for said mechanism; and means controlled by the tripping member to lock the clearing device in or out of effective position; of a cam on the lock; and an arm on the main drive shaft to shift the cam to release the lock, and free the clearing device.

4. In a calculatin machine, the combination with a main rive shaft, adapted to rock forwardly and backwardly; means to rock the drive shaft forwardly; a tri pin member to control the operation of said means; accumulating mechanism; a clearing device for said mechanism; and means controlled by the tripping member to lock the clearing device in or out of effective position; of an arm on the main drive shaft, having a tappet; and a cam on the lock interposed in the path of the tappet when the lock is effective, to be shifted by the tappet, to free the clearing device.

5. In a calculating machine, the combination with a main drive shaft a motor a; clutch interposed between the main drive shaft and motor; a clutch-releasing member; a trip for said clutch-releasing member; accumulating mechanism; clearing mechanism; and an interlock between the trip and the cleardrive shaft; and a cam on the interlock, said in mechanism; of an arm on the main cam merging into a dwell portion and shifted into the path of the arm when the clutch-releasing member is shifted to idle position, to be operated by said arm, to disable the interlock and free the clearing mechanism as the main drive shaft completes its orward stroke.

6. In a calculatin machine, the combination with a main (fi'ive shaft; a motor; a clutch between the motor and main drive shaft; accumulators; clearing mechanism therefor; a trip member to control the clutch; and an interlock between the trip member and clearing mechanism; of a cam on the lock; and means on the main drive shaft to coact with the cam and release the lock prior to the completion of a full stroke of the main drive shaft.

7. In a calculatin machine, having accumulators, the com ination with a main drive shaft; means to drive the shaft in one direction including a motor; a single driving arm; a clutch connection between the motor and driving arm; means to transmit power from the single driving arm to the main drive shaft; means to return the main drive shaft to initial position, the driving arm adapted to make a complete rotation for each complete 0 eration of the main drive shaft; and a c utch-releasing key to control the connection of the motor and main drive shaft; of a clearing mechanism for the accumulators; means controlled by the clutch-releasing key to lock the clearing mechanism in effective position; and means actuated from the main drive shaft to positively disable the locking means at the end of the forward stroke of the main drive shaft, notwithstanding continued pressure on the clutch-releasing key.

8. In a calculating machine, having accumulators; the combination with a main drive shaft; a single, motor-driven arm to drive the shaft in one direction; means to return the shaft to initial osition; and o era- 110 tive means to control t e actuation o the motor-driven arm, said arm adapted to make a complete rotation for every complete operation of the main drive shaft; of a clearing mechanism for the accumulators; 115 means under control of said operative means to lock the clearing mechanism in effective position; and means actuated from the main drive shaft to render the locking means ineffective as the drive shaft approaches one 120 limit of its throw.

Signed this 11th day of October, 1913.

CHARLES V. W'ILGUS.

In the presence of-- E. M. Damon, RALPH S. Wanrmnn.

It is hereby certified that in Letters Patent No. 1,150,916, granted August 24, 1915, upon the application of Charles V. Wilgus, of Kingston, Pennsylvania, for an improvement in Calculating-Machines, an error appears in the printed specification' requiring correction as follows: Page 3, line 62, for the words locking the read the locking; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the ease in the Patent Office.

Signed aind sealed this 7th day of September; A D., 1915.

I J. T. NEWTON,

Acting Oommisstoner of Patents.

[SEAL] 

